Revolving-door structure.



W. S. ELY.

REVOLVING DOOR STRUCTURE.

APPLIOATION FILED JUNE 29. 1910.

1,007,025, 7 Patented Oct. 24, 1911.

6 SHEETS-SHEET 1.

w. 's. ELY.

REVOLVING DOOR STRUCTURE.

APPLICATION FILED JUNE 29, 1910.

Patented Oct. 24, 1911.

6 SHEETS-SHEET 2.

" h/H T" Me Fig-21 W11 5 8 WITNESSES: Q INVENTOR M d5 9 3 9" v W. S. ELY.

REVOLVING DOOR STRUCTURE.

APPLICATION FILED JUNE 29. 1910.

Patented Oct. 24, 1911.

6 SHEBTSSHE ET 3.

WITNESSES: mvemoa $2 2/ dis m $3 9. v g' W. S. ELY.

REVOLVING DOOR STRUCTURE.

APPLICATION FILED JUNE 29. 1910.

Patented Oct. 24, 1911.

6 SHEETSSHEET 4.

ots

w. s. ELY

REVOLVING DOOR STRUCTURE.

APPLIUATION FILED JUNE 29. 1910. 1 07,025, Patented Oct. 24,1911.

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revolving column; Fig. 9 is an elevation where hatched in section at its axis, through WALTER S. ELY, OF FLUSHING, NEW YORK.

REVOLVING-DOOR. stance-roan.

Specification of Letters Patent. Patented Oct. 24 1911.

Application filed June 29, 1910. Serial 'No. 569,619.

To all whom it may concern:

Be it known that I, WALTER S. ELY, a citizen of the United States, and a resident of 18 Ash street, Flushing, borough of Queens, and State of New York, have inwhich will be understood by annexed drawing, in which in section just tween the oscillating wall-levers. andtheir connecting-rods; Fig. 3 is a planshowing the wings collapsed and folded in the center of the casing with the hinged walls in their outer positions; Fi 4 is a similar plan showing the wings olded at'o posite sides of the indle in the middle '0 the'casing; Fig. 5 1s a plan showing the wings collapsed, and moved to one side of the casmg; Fig. 6 is an elevationof the revolving.

door structure with the walls in their outer position; Fig. 7 is a cross section through the revolving door column just below the top of Fig. 9; Fig. 8 is an elevation in section where hatched through the top of the the bottom of the revolving column; Fig. 10 is a cross section through one of the revolving wings showing the hand-rail attachments; Fig. 11 is an elevation of portion of a wing showing the hand-rail thereon; Fig. 12 is a plan showing the top of the outer end of a wing, in section, where the wings 001- lapsibly, of automatically vibrated walls for. the casing in place of the usual curved walls "to contact with the revolvin door-wings, of a special form of packing or the edges of: the wings where they contact with the cas- I ing, and of other details of construction,

reference to the hatched, just above the packing keys;-Fig.

13 is a vertical section through the top ra1l of a wing showing the sectional packing; Fig. 14 i% a face view of the top outer corner of a wing, in section at the center line where hatched, showing connection between the sectional packings upon the top and edge of the wing; Fig. 15 is a vertical section through a wing at the center of thebracelock, with one end of the brace; Fig. 16 is a horizontal section through a wing and brace-lock at the to of the pawls c Fig; 17 is an elevation 0 portion of a wing and the brace-lock, 'with the face of the lock partly broken away; Fig. 18 is-an elevation of portion of a wing, showing the side of the brace-lock, reverse to thatshown in Fig. '16; Fig. 19' shows the edges of two door-V wings in section where hatched,- with the latch connecting the wings; Fig. 19" shows face views of the two latch-plates; Fig. 20 is,a plan of the roof of the door-casing; and Fig. 21 is a cross section, where hatched, on the dotted line ha: in Fig. 20, at. the center of the wall oscillator.

The central spindle or shaft (1 for the wings is shown swiveled at its upper end in Figure 1 is 9. Ian of the entire structure ove the wing-braces; Fig. 2 is a section showing the connection bep The truck is supported upon the roof b of.

the casing.

i nu TED STATES PATENT OFFICE.

The wings are mounted to turn upon the shaft, the upper end of which is shown in Fig. 8 and the lower end in 9, with a series .of four cast iron disks at each end of the shaft upon which the inner edges of the wings are ointed.

The extreme'lower and upper disks (1 and d are attached ,to the shaft to turn therewith, and one of the wings C is jointed to these disks. The disk d is keyed rigidly to the shaft and supports the weight of all the parts which hang thereon. djoining these disks, are disks d? and d, which are fitted to turn in contact with the shaft and connected by a sleeve d, and a second wing is jointed uponthese disks.

Construction of c0lumn.The adjacent disks d and d are rabbeted externally to fit a shell (Z which is flush with the exterior of the disks. A short casing (Z is fitted movably upon the upper disk d, and an annular felt packing d is secured between such casing and a flange upon an interior plate d. A collar (Z upon the hub of the disk d supports a spring d to press the plate d, upward, thus keeping the packing'ii constantly against the roof 6 of therevolving 'door. An additional shell d is fastened to the bottom. of the disk 01 and exdrical column to contact with the inner.

edges of the wings, or with packings thereon.

The lower end of the shaft (Z does not extend to the floor, but is furnished with a socket-casting 01 which is adjustable vertically upon the shaft, andis provided at the bottom with a pin 03. This pin can be lifted out of its floor-step at when it is desired to move the collapsed wings to one side" of the door-casing, to form an open passageway through the center of the same. When the pin d is in its step the socketcasting is stationary. A circular flange (Z is secured in the bottom of the shell'd to center it, and'is fittedloosely to the casting (Z to revolve around the same when the casting is stationary.

A circular plate 01 with incurved flange at the periphery is swiveled upon the socketcasting, and a latch (Z is attached to the disk d to engage this flange, and holds the socket-casting raised and the pin clear from its step, when moving the collapsed door sidewise. When thus moving the door, the wings are disposed equally at opposite sides of the column as shown in Fig. 4, and such disposition is secured automatically. by locking the disks d and d together before the wings are folded. This is effected, as shown in Fig. 9, by a bolt d extended through a mortise in the disk d and its upper end adapted to engage a slot e in'the adjacent side ofvthe disk d. The opposite wings C C are attached to the disks d and (Z and when the wings are all extended in their working position, as in Fig. 1, the slot 6 coincides with a bolt d.

The bolt is automatically raised when the socket-casting is lifted, by means of a foot 01 upon the bolt, having a roll d to rest upon the circular plate d. The mere lifting of the socket-casting, before the wings are collapsed, thus secures two wings at opposite sides of the center, against which the intermediate wings are readily folded. When it is desired to restore the wings from the side of the door-casing to the center, in their operative position, the pin (Z is brought over the floor-step d, and the latch (Z is released by inserting the hand through the opening 03 thus allowing the socketcasting to drop.

The pin (Z is preferably made with a screw-thread, as shown in Fig. 9, to worm out of the step the dirt which falls within the same when not filled by the pin, and the bottom terminal of such screwthread is shaped to embrace a stud d" in the bottom ofthe step, which holds the socket-castingthereafter from turning. Such stationary socket-casting thenforms an extended bearing for the bottom end of the shaft d, which bearing can be kept lubricated and thus greatly diminish the resistance to the rota-" tion of the column. Y

J oz'nt of wings and coZum/n.Figs. 7 and 8 show the joint of the wings and column which permits them to turn as a unit about the shaft untilthe wings interfere with one another, and thereafter to turn upon their joints, with the disks, when the wings are folded together. One side of each disk has an opening to admit a hinge-ear, and a transverse groove is formed, upon the disk at each side of such opening. The T inner edge of each wing is provided with a jointcasting cl" having at the center a hinge-ear d? which fits into the disk-opening, and at opposite sides of the hinge-ear are hinge- "lugs 0 which fit the said grooves when the wing is extended from the disk. The lugs 0 are pressed forcibly and elastically into the grooves by mechanism within the disk, consisting of springs d which aremounted upon U-shaped frames (Z and 01 the former of which is connected to the hingeear d by a link d. This link is connected to the frame by a pin d and to the hingeear by a pin 03 The frame 01 would not appear in Fig. 8, but the lugs on that frame, which embrace the rods d are shown seetioned, and the remainder of the frame is indicated by dotted lines to show its location.

The frame (1 is held adjustably within the disk by a screw d" which adjusts the tension of the springs. The frame (i has lugs 03 upon its two ends, with rodsd llO two wings collide, after which'theewing turns upon one of the hinge-lugs drawing the hinge-ear oi out of the disk in oppotogether by an automatic latch shown in Figs. 19 and 19, the parts of which are cated close to the edges 0 of the wings so as to be accessible when it is desired to unla-tch the wings. Each wing is provided upon one side, as shown in Fig. 19, with the movable latch-hook z', and upon the opposite side with a plate 1 having a lip mto engage a sloping head is upon the latch-hook. The latch is pivoted within the wing upon a plate 70'. The lip m, as shown in Fig. 19",

is made many times wider than the hooked head is, so that the latch may engage the same when the edges of the wings are even with one another, as shownin Fig.4, or uneven with one another, as shown in Fig. 3.

A knob or pin n is projected from the latch-head to the edge 0 of the wing, to lift the latch when it is desired to release the wings from one another.

Brace-lock for doors.-A brace-lock is fitted in each Wing, extending preferably through the same, and each brace has a permanent swivel attachment to the side .of the lock on one face of the door, and a detachable spring connection with'the oppo site side of the lock. The swivel connec-;

tion consists of-arotatable block p upon the lock-casinge with the head 1) of the brace e pivoted therein, so'that it may hang down when not in use, as indicated by the dotted lines p in Fig. 18'. The opposite end of the brace has a head 1)? with lugs or rolls 9 at its opposite sides which enter the lock casing e" to engage dogs therein andledges r which have inlets at their opposite ends to admit the lugs. Sloping seats r are provided within the inlets, leading the lugs to the faces of dogs 8, 8 which are pivoted in separate frames t, t arranged to slide within theJOck-casing E. A space w is shown between the 1 es 1' in Fig. 17 to admit the head 30 of the race as the lugs qpass be-' vneath the ledges. The dogs" are forked, as

shown at the left hand end of Fig. 17, to

engage the lugs at opposite sides of the head p Leaf-springs t press the dogs normally toward the ledges 1- and the dogs are constructed with a space between their adjacent ends sufiicient to admit the lug 9 upon the head of the brace. The frames t, t overla one another at the sides, as shown in Flg. 17, and have opposed lugs u between which spiral springs 'v are inserted under compression. p

The frames are prevented by the contiguity of the seats r from moving toward one another, thus preserving the space between the ends of the dogs for the admission of thelugs or rolls g; but either frame may be pulled away from the other in'op position to the springs c, .as' indicated by the dotted lines (F in Fig. 17. The dogs are so shaped that when moved back, they ledges r into contact with the other dog.

The lugs thus become locked between the two dogs and the ledges, and can be released manually by putting the finger in the inlet and pressing one of the dogs down to release the lugs. Either a push or pull upon the brace also operates to release it from the look, as it moves one or the other of the dogs with its frame it or t until the lugs upon the brace reach the inlet, as shown by the dotted lines 9 in Fig. 16, when the head of the brace pulls freely out of the look.

When the wings are, connected by the braces for ope ation as shown in Fig. 1, the springs vexer sutficient resistance to. the

escape of the braces from the locks, to rotate the door-wings in a normal manner, but if two adjacent wings are pushed in opposite directions, the tension of the spring is overcome and the'head of the brace pulls out of the lock. Such release is effected by --pulling,'but if in case of a panic a number of people were to crowd into or against the revolvmg wings, the pressure upon the wings would disengage all the braces by the push upon them, thus allowing 1 the wings to fold together and clear the passa e. dofi n, as indicated by dotted lines 1) in Fig. 18 andis thus out of the way until used for reengagement.

Any brace whendisengaged lfalls' The rigid braces described serve, if one he accidentally disengaged, as by wind pressure upon one of the wings, to hold the remaining wings in place until such brace can be rengaged, which avoids the passage of dust and wind through thecasin-g which sometimes happens where flexible braces are used and one of them becomes disengaged; as such disengagement permits all the wings to collapse together, thus opening the passage to wind and dust. My braces and locks are so constructed that they may be used on any of the revolving doors now in side-walls a, a, a and 0, are moved to just clear or contact with the outer edge of the revolving wing, by means of a cam h upon the top of the shaft (i 1186. Oscillating of side-waZZs.The hinged s In Fig. 20, the roof b of the door-casing is broken away at one side to show the hinged walls beneath the same.

The truckhas wheels g to run upon rails 9 upon the roof when shifting the wings to one side of the casing, a slot being provided between the rails for the movement of the. shaft atsuchtimes.

The movable walls are jointed by hinges a at their inner edge to a post a upon the door-frame a, and each side-wall is hinged by a bracket h and pin it to a connectingrod 72. which is jointed to a lever h and this lever has an arm carrying a roll h 'to bear upon the cam. The two rolls at one side of the cam hear one above the other upon the same part of the cam, so asto similarly oscillate two adjacent side-Walls. The levers are pivoted upon pivot studs h fixed on plates k upon the roof 6 at opposite sides of the cam. Means is provided to 1 vary the efi'ect of the cam upon the levers sothat when desired the side-walls. may, by a diminished vibration, clear the edges :of the door-wings, to permit ventilation through the door-casing.

Four levers are. shown to operate the four side-walls, but only the outer ends of the le-, vers in the left hand part of Fig. 20, are shown, in order to expose the means for varying the stroke of the levers. Such means consists of levers h havingfulcra h upon one end of the plates 72,, each lever supporting a stud or roll it between the studs-h. Each lever h? carries a pin it from which a spring h is extended to a pin-upon the le-' ver h. The spring operates on the said lever h" and through that upon the connecting-rod 71. to draw the side-walls normally toward the door-wings, at the same time pressing the rolls on the lever-arms h? toward the cam. The cam has four equal projections which *operate synchronously upon the four door-wings by pressing the connecting-rods hfioutwardly, in opposition to the springs k thus moving the walls'in the desired manner for the passage of the wings. The levers h are connected at their outer ends by swivel-nuts h" and a right and left hand screw h. Fingers h are projected one above the other from the hubs of the levers h and lie normally in contact with the stud or roll it when the side-walls are moved inward to the maximum extent required. See the upper half of Fig. 20.

Fingers h are fitted loosely to the pivotstuds h of the levers h, and lie normally in contact with the 'stud or roll 11, when the side-walls are moved inward to the maximum extent required. Each finger has a hub'upon its lower side to support them one above the other, and the levers h are pro vided with downwardly projecting brackets h to contact with the outer sides of the fingers, as the side walls move inwardly, so that the inward movement of the side walls is controlled by the fingers; while the outward movementfof the walls is wholly independent of the fingers.

The adjusting of the roll or studg" outwardly obstructs the inward move ent of the fingers as the walls move inwai; ly, and

thus causes the side-walls to clear e doorwings in their revolutions, and the follow:

ing means is provided to vary, such clearance to any desired extent. The screw k is mounted in bearings upon a plate h", and

has a worm-wheel k upon its middle to which. a Worm h isfitted, with a shaft h extended over the ,top of the post a. An

upright shaft h is mounted upon the post and connected by bevel-wheels at thetop with the shaft h, and is connected at the bottom to a hand-wheel-h by gearing in a crank-box If.

If anyone is caught between the side-walls' and thedoor-wing, the pressure upon his vbody would be limited to thepressure of the spring h ,which is the force that m'ovesthe side-walls inwardly, but special provision is also made to release the side-walls entirely fromvthe grip of the spring in case of such accident, such provislon consisting of an automatically detachable connection, shown in Fig. 2, between the rod h and the end of the lever h"; The lever is forked, and the end of the rod is formed with a slot h, and fitted into the-fork, as shown in Fig. 2, and the detachable connection is formed by a pin h having a conical shoulder fitted into a conical recess or countersink upon the-rod, at the inner end of the slot. j

A socket-tube h is xtendedfrom the upper side of the fork to receive the head the pin and a spring h, and a thumb-screw h" is provided to adjust the pressure of the spring so as .to hold the conical shoulder into the countersink with force suflic'ient to oscillate the doors under normal conditions. Any excessive pressure upon the side-Walls pushes the conical shoulder of the pin upwardly and permits the rod to slide upon the lower end of the pin which passes through the slot, the length ofthe slot' being suificient to permit the side-wall to push back as far as is desired.

Door-wing packings.sectional packings are formed of spring-keys or fingers sustained upon the vertical and upper edges of the door-wings, totake' the place of the or dinary rubber-flap,which wears with great rapidity and soon loses its elasticity so that it does not make a close joint with the sidewalls of the door-casing. Such packings are shown in Figs. 12, 13 and 14, and consists of fingers j, j, jointed upon a. hinge- By turning this hand Wheel, the levers h can be actuated to ad-- rod 7' which .is 'journaled in bearings or tongues 7' formed upon a carrier 7'; which of a sheet-metal trough, adapted to fit upon the edge of-the door-wing, and having the tongues 7' punched from its back at suitableinter'vals to embrace four or six of the fingers, thus giving the rod j a strong support. The carrier 9" is held detachably upon the edge of the wing by clips j which are constructed to pass freely through the slots from which the tongues 9' are passed, and

are offset at the upper end so that when screwed upon the edges of the door-wing at intervals their offset ends slip over the u back plate of the carrier and hold it close casing-walls and also holds the fingers to-- upon the edge of thewing, while permitting it to be removed by sliding it upwardly ofi the ends of the clips. 4

The outer ends of the fingers have undercut notches to receive a continuous packing strip of fabric 7' -which contacts with the gether flexibly. The alternate fingers are provided with curved leaf-springs 7" arranged to press such fingers in opposite directions, the strip j preventing the fingers from yielding to such pressures, and the resultant of the pressures holding'the fingers normally in a centrali position, projected from the edge of the'door. The hinged rod is grooved longitudinally and a segmental recess 7' is formed in the hub of each finger with shoulder at one end, and hooks are formed upon the ends of the curved leafsprings to engage such grooves and shoulder. The segmental recesses are formed at opposite sides of the'hub in the alternate fingers j and j, and the springs are applied thereto in reverse positions to produce the effect described above of holding the fingers centrallyhalf of the springs being compelled to yie d when the fingers are swung n one direction or the other, by the contact of the cord j with the casing-wall. When all the fingers are thus swung, the hooks upon half of the fingers move freely the segmental recesses 9', which avoids all strain upon the springs of such fi -gers. The eye in the hub of each finger is 'naterially larger than the hinge-rod j to a lmit the spring 7" and permit its movement and in practice the springs are placed in such eyes, and a washer crowd- 'ed into the eye at each side of the spring to hold it in place, before the fingers are threaded upon the hinge-rod.

In assembling the parts, one end of the hinge-rod is inserted in the first tongue j and through a group of four fingers between such tongue and the next, the rod being so held that the groove engages the hooks upon the inner ends of the springs j. The hinge rod is thus slipped through all of the tongues and fingers in succession, the springs causing the alternate fingers to project at opposite inclinations from the center line. When the rod is wholly inserted, the packing-strip j", which may be a molded section of felt, rubber-cloth or any suitable fabric, is slipped successively into the notches in the outer ends of all the fingers, each being brought to the center during such operation so that the cord holds them all elastically in place.

The joining of the fingers by such a flexible .strip permits any part of the packing to yield independent of the rest.'

With the construction described, the fingers are adapted to yield sufliciently to compensate for any inequalities in the surface of the casing-walls, and the construction is far more durable than a flexible flap, as its elasticity is permanent, while there isno Wear upon it except at the strip of fabric 9',

which can be readily and cheaply renewed.

The packing for the horizontal top edge of the door-wings is not hinged, but consists of a trough j inserted in a groove in the top of the wing and having inwardly bent flanges upon its inner edges, with blocks 7' held movably therein, beneath certain of which blocks springs 7' are inserted in the bottom of the trough, to holdthem normally at a uniform level. The tops of the blocksare formed with undercut grooves, and a flexible packing-strip j is engaged with such grooves, so that the bloclm pressed upwardly by the springs serve to lift all the other blocks equally.- At the upper corner of the wings the two packings are united by plates u per finger serve to ress the block and p ates normally upwar like the blocks j".

The corner packing thus has an upward movement like the packing upon the top of the wing, and a ca ability of swin 'ng on the hinge-rod like t e packing on t e edge of the wing.

A packing is provided, as shown in Fig.-

7, to make a close joint between the inner edges of the wings and the central post, all the parts of which form acylindrical surface of uniform diameter. This packln consists of a longitudinal strip 0 of yiel ing material having its'opposite edges fitted beneath flanges turned inwardly upon the edges of a metallic stri which .is secured upon the inner edge 0 each wing. The

metallic strip with inturned flanges forms a grooved metal holder and the flexible packing strip is made a little wider ,than the space between the flanges on the metal holder, so that it bulges toward the cylinto bearings upon the door-wing. The bearings j for the outer end of the rail are carried-by a foot f and the links have pivots f fitted to such bearings. The rail is provided at its inner end with an extension f projected nearly to the central drum, and the adjoining door-wing has a plate thereon with an upwardly beveled lug f adapted to contact with such extension when the wings are swung toward one another. The links f are formed in a swinging frame having pintles jointed inbearings f upon a foot-plate The lower hearing has a notch f to which a beveled tooth upon the linkframe is fitted, and the upper bearing has socket f with aspiral-spring f therein,

and the pintle at that side of the link-frame has a sleeve fitted into such socket so as to either turn or slip upward therein. The ends of the spring are engaged respectively 1 with the cap of the socket and with the bore of the sleeve, so that the spring presses the link-frame normally downward, and thus engages the tooth with the notch f of the lower bearing f. The beveled lug f when it contacts with the extension f of the hand-rail, operates first to raise the same, thus lifting the tooth on the link-frame out of the notch h, and then forcing the rail .endwise, so as to swing upon its links into close contact with the door-wing, as shown in dotted lines in Fig. 10. Such swinging winds up the spring f, so that when the door-wings are again separated, the spring throws the hand-rail back toward its initial position until the tooth upon the link-frame enters the notch f .in its hearing, which serves to hold the hand-rail firmly in position when used in pushing the door.

Having thus set forth the nature of the invention what is claimed herein is;

1. In a revolving door, the combination, with the central shaft, of similar series of disks near its opposite ends with concentricsleeves connecting the disks in pairs and the wings hinged each to one pair of the disks,

whereby. the wings in collapsing first turn 3. In a revolving door, the combination,

with the'central shaft, of similar series of disks near its opposite ends with concentric sleeves connecting the disks in pairs, wings hinged each to one pair of the disks, and spring fixtures withinthe disks with con nection to the wings to hold them normally radial to the disks;

4. A revolving door having a central shaft with similar series of disks near its opposite ends and concentric tubes connecting the same in pairs, a seriesof wingseach having connection to the two disks upon one sleeve, such connection with each disk having hinge-lugs at opposite corners of the wings next the disk, and the disk having open grooves across the rim of the disk to receive such lugs, and an opening between such grooves, a hinge-ear projected from the wing through such opening 'into' the disk,

and a spring fixture within the disk engaging such ear to hold the wing normally ra dial upon the disk.- 5. In a revolving door, the combination, with the central shaft, of similar series of disksnear its opposite ends with concentric sleeves connecting the disks in pairs, a shell engaging the shaft between the disks, and wings jointed upon the disks to turn thereon and arranged to contact continuously with all of the disks and the shell.

6(ln a revolving door, the combination, with the central shaft, of similar series of disks near its opposite endswith concentric sleeves connecting the disks in pairs, a shell engaging the shaft between the disks. and wings jointed upon the disks to turn thereon, a longitudinal grooved metal holder upon the inner edge of each wing, and a flexible packing strip fitted detachably in the said holder to contact uniformly with all of the disks and the shell when the wings are extended. v

7. In a revolving door, the combination, with a central post, of wings hinged thereon, springs for holding the wings normally radial to the post. and theadjaeent faces of the wings'provided near their edges with en aging members consisting of the movable latch-hook k with means at the edge of the door for lifting such hook, and the opposed plate having a lip m much wider than the latch-hook to engage therewith when such engaging parts are not centrally opposed to one another,.the latches upon the supports for the dogs, permitting move-- wings serving automatically to look all the wings to one another in opposition, to thesprings, when folded together at one side of the post in any part of the casing.

8. In a revolving door, the combination, with the central shaft, of a series of wings collapsible about said shaft to one side ofthe shaft, a brace-lock upon each of the Wings having upon one side a swivel at- .1

tachment for a brace and on the opposite side a doubly detachable connection fora brace, such connection operating to detach the brace by pushing'or pulling, whereby pressure applied to a door-wing .pulls the brace from the adjoining wing, and continued pressure thereafter detaches the ,braces successively from the remaining ledges between the said inlets, and springdogs beneath the inlets with space between the same for lugs upon a brace, yielding ment of the same toward the inlets, and

braces attached at one end to each of the door-wings and having at the opposite end lugs to enter the inlet and engage the ledges and the opposite ends of the dogs,-,thecconstruction permitting the escape of the bracelugs from the inlets when thebrace is either pushed or pulled.

10. The combination, with the central shaft, and a series of wings collapsible about said shaft to one side of the shaft, of

a brace-lock upon each of the wings hav ing opposed sloping inlets upon one side with ledges between .the said inlets and spring-dogs beneath the inlets'with space between the same for lugs upon a brace, in dependent frames movable within the lockcasing and having the dogs pivoted therein, and a spring connection between the frames whereby a thrust upon either of the dogs moves the said dog toward the. inlet in opposition to the sprin 11. The combination, with the central shaft, of a series of wings collapsible about said shaft to one side of the shaft, braces attached to the same side of each of the wings and their free ends shaped to engage a brace-lock, a brace-lock upon each of the wings having a doubly detachable connection for the shaped ends of the braces, the brace-locks having spring-sustained means to retain such shaped ends when moved against a specific spring resistance, and operating to discharge such shaped ends when the pressure in either-direction exceeds such spring resistance.

12. A revolving shaft, and wings carried thereby, with a door, having arevolving casing having hinged side-walls movable at their extremities, and means operated by "the spindle-for vibrating the side-wallsxat each passage of a wing to maintain contact therewith. l

13. A revolving'door having a revolving shaft, and wings'carried thereby, with a casing having hinged side-walls movable at their extremities, a cam upon the revolving shaft, and levers operated by the cam with connections to the side-walls same as required. g

14:; A revolving door having a revolving to vibrate the shaft and wings carried thereby, with a casing having hinged 'side-wallsmovableat their extremities, springs, for pressingthe side-walls normally inward toward the shaft, a cam upon the revolving shaft, levers operated by the cam, and slotted connections to the side-walls adapted to vibrate the side-walls and to permit their outward movement independent of the levers.

15. A revolving door having a revolving shaft and wings carried thereby,

' casing having hinged side-walls movable inwith a ward toward the shaft, a cam upon the re- 'volving shaft, levers operated by the cam with connections to theside-walls to vibrate the same, adjustable springs for pressing the side-walls toward the shaft, and means for releasing the spring pressure when,de-

sired, to leave the walls intheir outward position.

16,. A revolving door having a revolving shaft, and wings carriedthereby, with a casing having hinged side-walls movable at.

their extremities, a cam uponthe shaft-with levers operated thereby, adjustable stops for varying the extent of the lever'movement, and connections from the levers to the side walls to vibrate the same.

17. A revolving door having a revolving shaft, and wings carried thereby and col-.

lapsible thereon, with a casing having hinged sideewalls movable at their extremi-- Ities, track-rails sustained above the wings, a,

truck having a bearing for the shaft above the wings and. fitted movably to the said rails, a cam upon the shaft above the truck, and levers moved bythe cam with connectionsfto the side-walls,'the outward movement of the side-walls clearin the j levers from the cam to permit the true shaft, and collapsed wings to be moved to one side of .the casing.

18. Ina revolving door, the combination, with each of ,the wings, ofhand-rail-bearings having links jointed thereto and projected from the face of the wing, and a hand-railjointed to suchlinks and one end extended in th'e'path of the adjacent wings as the wings are folded together, whereby the hand-rail is pushed longitudinally and swung close to its supporting win 19. In a revolving door, the com ination.

with a wing,- of a. hand-rail connected to the face of the wing by projecting jointed links,

and means upon the adjacent Wing for pressing such hand-rail longitudinally when the wings are folded toward one another, to swing such hand-rail close to its supporting wing.

" 20. In a revolving door, the combination,

of a tubular pin-carrier movableverticaify upon the bottom of the shaft, a center-pin upon the carrier to enter the said step, and means swiveled upon the carrier for holding the carrier elevated when desired.

22. In a revolving door, the combination, with a central column having a shaft connected to revolve therewith and suspended from an overhead truck, of a socket-casting forming a bearing for the bottom of the shaft and vertically movable within the bottom of the column such socket-casting having a pin to fit a oor-step and remain stationary therein, and means to raise the socket-casting from the step, and to retain itin such raised position when moving the collapsed wings to the side of the casing.

23. In a revolving door, the combination, with the central shaft suspended from an overhead truck, of similar series of disks near its opposite ends with'concentric sleeves connecting the disks in pairs, wings hinged each to one pair of the disks, column-shells applied to the disks to form'a continuous cylindrical column, a socket-casting forming a bearing for the bottom of the shaft and vertical movably within the bottom of the column, such socket-casting having a pin to fit a floor-step and remain stationary therein, a vertical bolt extended through the 'bottom disk to engage a slot in the one above, a connection between such bolt and the socket-casting, and means for holding the socket-casting lifted within the casing and thus actuating the bolt during the shifting of the collapsed doors to the side of the casing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WALTER S. ELY. Witnesses I I M. U. OVERLAND, LAURA GALAMBos. 

